ISACSafety RF Exposure Compliance, SAR Monitoring & Beam Nulling

ISACSafety ensures human electromagnetic safety in multi-gigabit high-power 6G ISAC deployments, actively monitoring Specific Absorption Rate (SAR) limits and projecting real-time RF nulls around detected people.

ISACSafety Real-Time SAR Mitigation Architecture

ISAC Core: SAR Safety Core — Human Presence Tracking & Power Nulling

6G ISAC Nodes & Beamforming Subsystems

Human Radar Micro-Doppler Detector
Spatial EIRP Safety Governor
Dynamic Beam Pattern Nuller
ICNIRP 2020 Regulatory Engine
Continuous Multi-Band Exposure Log

Architectural Layers & Waveform Pipelines

Couche 1: Forme d onde à double fonction et bande de base (OTFS / OFDM-Radar / Fractional Fourier Transform / Ambiguity Function): Modulation OTFS et synthèse fractionnaire de chirp atteignant une interférence inter-porteuse nulle sous de fortes dispersions Doppler.
Couche 2: Massive MIMO et frontaux de formation de faisceaux (140 GHz D-Band / True-Time-Delay (TTD) / Hybrid Analog-Digital Beamforming): Réseaux à commande de phase actifs Sub-THz avec atténuation du strabisme de faisceau, faisceaux de données et lobes de suivi radar simultanés.
Couche 3: Traitement du signal radar et nuage de points 4D (2D-FFT Range-Doppler / MUSIC AoA / CFAR Detection / Micro-Doppler Extraction): Résolution sub-décimétrique de portée et de vitesse, détection CFAR et classification micro-Doppler de marche biométrique et hélices de drones.
Couche 4: Orchestration de la détection de réseau et 3GPP Rel-19 (3GPP Rel-19 ISAC Core / Sensing Function (SF) / Reconfigurable Intelligent Surfaces (RIS)): Réseaux radar collaboratifs sans cellule, allocation dynamique des ressources temps-fréquence équilibrant SLA et temps de revisite radar.

Sensing Telemetry & Benchmarks: <5 cm (Résolution de portée) | 0.1 m/s (Précision de vitesse) | <10 ms (Latence de trame radar) | 3GPP Rel-19 (Standard mondial)

ICNIRP Human Exposure Limits & Real-Time Beam Nulling in ISACSafety

As 6G cellular networks push into higher frequencies (FR2 mmWave and FR3 upper mid-band) with massive antenna arrays and high equivalent isotropically radiated power (EIRP), strict human electromagnetic safety regulations must be observed. ISACSafety leverages integrated radar capabilities to identify pedestrian presence, human bodies, and biological targets, dynamically steering RF energy away while sustaining connectivity.

Core Engineering Areas

Real-Time Specific Absorption Rate (SAR) Calculation and Multi-Band Tracking — Real-time computational electrodynamics calculating localized SAR and whole-body power absorption across millimeter-wave and sub-THz frequencies.
Dynamic Spatial Beam Nulling for Detected Pedestrians and Bystanders — Using integrated radar echoes to detect human coordinates and synthesize deep spatial radiation nulls (>30 dB attenuation) toward people.
Continuous Multi-Band Exposure Logging and Regulatory Audit Interlocks — Cryptographically signed radiation safety telemetry and fail-safe power shutdown interlocks for urban small-cell base stations.